Mill Computing, Inc. Forums The Mill Architecture Floating Point Rounding Reply To: Floating Point Rounding

Post count: 9

Classic case of slowdown due to global rounding mode is
the rules say you chop, and on the 80×87 this forces rounding mode to change twice, which costs a few
dozen cycles; see

There is a special optimization to avoid this double change and allow rounding.

  • This reply was modified 5 years, 7 months ago by  gideony2.